Use of GDB Debugging tools in GCC

First, use GCC to compile the source file when you add the-G option to generate a debug file, for example, to debug a test.c file, enter the command $ gcc-g test.c-o test_gdb generate the Test_gdb file.

Then, run the command $ gdb test_gdb to enter debug mode.

In debug mode, (GDB) indicates that a command can be entered at this point, and the commonly used GDB debug commands are as follows:

GDB Common Commands	Format	Meaning	Shorthand
Break	break [line number or function name]	Set a breakpoint in the program	B
Cd	CD Catalog	Change the current working directory
Continue	Continue [Start, end]	Continue execution from Breakpoint	C
Delete	Delete Breakpoints Breakpoint Number	Delete a breakpoint
Display	Display variable Name	Display parameters
File	File File name	Loading files
Info	Info variable Name	List information for variables	I
Kill	Kill	Terminate program run
List	List [Start, end]	Listing code listings for a file	L
Next	Next	Next line	N
Print	Print variable Name	Print variable Contents	P
Pwd	Pwd	Displays the current working directory
Quit	Quit	Exit GDB	Q
Run	Run args	Run the program	R
Step	Step	Next step (can be performed inside the function)	S
Watch	Watch variable name or expression	Set a monitoring point for a variable or expression

Use of GDB Debugging tools in GCC